Ingress-nginx path can be pointed to service account token file
CVE-2021-25745

7.6HIGH

Key Information:

Vendor

Kubernetes
Status
Kubernetes Ingress-nginx
Vendor
CVE Published:
6 May 2022

What is CVE-2021-25745?

A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use the spec.rules[].http.paths[].path field of an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.

Affected Version(s)

Kubernetes ingress-nginx < 1.2.0

References

https://groups.google.com/g/kubernetes-security-announce/...
x_refsource_MISC
https://github.com/kubernetes/ingress-nginx/issues/8502
x_refsource_MISC
https://security.netapp.com/advisory/ntap-20220609-0006/
x_refsource_CONFIRM

CVSS V3.1

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Gafnit Amiga
.